H+L Hydraulic Solenoid Valve for CNC Turret Punch Press

The H+L Hydraulic Solenoid Valve is an important control component used in the hydraulic system of CNC turret punch presses.

A turret punch press hydraulic power unit normally contains multiple valves with different functions rather than relying on a single valve to control the complete hydraulic circuit.

Depending on the machine configuration, the hydraulic valve group may include components responsible for:

• High-pressure control
• Low-pressure control
• Pressure compensation
• Pressure relief
• Hydraulic flow switching
• Circuit unloading
• Pressure regulation
• Oil direction control

These valves work together to control hydraulic oil flow and pressure during punching, return, standby and other machine operating cycles.

WYS MACHINERY stocks multiple H+L hydraulic valve models for replacement and maintenance applications on different CNC turret punch presses.

---

Function in the Turret Punch Press Hydraulic System

The hydraulic system of a CNC turret punch press must rapidly switch between different pressure and flow conditions during machine operation.

The hydraulic solenoid valve receives electrical control signals from the machine control system and switches the hydraulic circuit accordingly.

Depending on the valve position and function, it can open, close or redirect hydraulic oil flow and help control different operating states of the punching mechanism.

For example, one valve may control a high-pressure circuit during punching, while another manages low-pressure operation, unloading or pressure compensation.

This makes the hydraulic valve assembly a critical part of the CNC turret punch press hydraulic control system.

---

Main Valve Functions

High-Pressure Valve

The high-pressure valve is used when the hydraulic system requires higher working pressure, particularly during operations where significant punching force is needed.

It helps direct or control high-pressure hydraulic oil within the working circuit.

---

Low-Pressure Valve

The low-pressure valve is typically used during operating stages where full punching pressure is not required.

Controlling the machine under lower pressure during suitable phases can improve hydraulic efficiency and reduce unnecessary loading on the system.

---

Pressure Compensation Valve

The compensation valve helps maintain more stable hydraulic operating conditions when pressure or flow changes occur within the circuit.

This can contribute to stable hydraulic response and consistent machine operation.

---

Pressure Relief Valve

The pressure relief valve helps protect the hydraulic system from excessive pressure.

When hydraulic pressure exceeds the permitted value, the relief circuit allows pressure to be reduced, helping protect hydraulic pumps, pipelines, seals and other components.

---

Key Features

• Designed for CNC turret punch press hydraulic systems
• H+L hydraulic valve type
• Electrically controlled hydraulic switching
• Multiple valve models available
• High-pressure valve options
• Low-pressure valve options
• Pressure compensation valve options
• Pressure relief / unloading valve options
• Helps control hydraulic pressure, direction and flow
• Suitable for hydraulic power unit maintenance
• Suitable for replacement of worn or damaged valves
• Multiple models available from stock
• Replacement matching according to original valve model
• Suitable for various domestic and international punch press systems

---

Technical Specifications

Multiple Models Available

Different CNC turret punch presses use different hydraulic circuits, and even machines from the same manufacturer may use different valve models depending on:

• Machine series
• Hydraulic power unit design
• Punching tonnage
• Production year
• Hydraulic pressure
• Electrical control voltage
• Valve block configuration

For this reason, correct model identification is important when selecting a replacement H+L hydraulic solenoid valve.

WYS MACHINERY maintains multiple valve models for different punch press applications.

Customers can provide the information printed on the original valve nameplate or send clear photos for model confirmation.

---

Replacement Valve Identification

For accurate replacement, we recommend that customers provide:

• CNC turret punch press brand
• Machine model
• Original valve model
• Valve identification number
• Voltage
• Working pressure
• Photos of the original valve
• Photos of the hydraulic valve block
• Electrical connector configuration

From your sample photos, model identification information is clearly printed on the valve top label, which makes this type of component particularly suitable for model-based replacement supply.

This is an important sales point and should be emphasized on the website.

---

Compatible CNC Turret Punch Presses

WYS MACHINERY supplies H+L hydraulic valves for use with a wide range of domestic and international CNC turret punch press systems.

Replacement applications may include machines compatible with:

Yangli, JFY / Jinfangyuan, Yawei, AMADA, FINN-POWER, ACL, Wisdom, Aike, Tailift, Jiemai and other CNC turret punch presses.

Actual compatibility should always be confirmed according to the machine model, original valve model and hydraulic circuit specification.

Typical Applications

The H+L Hydraulic Solenoid Valve can be used for:

• CNC turret punch press hydraulic power units
• Hydraulic punching control
• High-pressure circuit control
• Low-pressure circuit control
• Hydraulic pressure compensation
• Hydraulic unloading
• Pressure relief
• Hydraulic oil flow switching
• Punch press hydraulic system maintenance
• Hydraulic valve replacement
• CNC turret punch press repair
• Punch press spare parts replacement

---

Importance of Hydraulic Valve Condition

Stable operation of the hydraulic valve is important to the overall performance of the turret punch press.

A malfunctioning or worn hydraulic valve may lead to problems such as:

• Unstable hydraulic pressure
• Slow punch response
• Abnormal pressure switching
• Failure to build working pressure
• Excessive hydraulic pressure
• Unstable punching cycles
• Hydraulic system alarms
• Abnormal oil temperature
• Incomplete unloading or pressure release

If a valve is suspected to be faulty, the original model and hydraulic circuit should be checked before replacement.

---

H+L Valve Replacement for Existing Machines

Many CNC turret punch presses remain in production for years, and replacement hydraulic components may eventually become necessary due to wear, contamination, coil failure or aging.

For customers maintaining existing machines, WYS MACHINERY can supply H+L hydraulic solenoid valves and related punch press hydraulic spare parts according to the original component information.

If the machine is older or the original spare part documentation is unavailable, customers can send us:

Photos + Valve Model + Machine Brand + Machine Model

and we can help confirm the replacement specification.

---

WYS MACHINERY Punch Press Hydraulic Parts

In addition to H+L hydraulic valves, WYS MACHINERY supplies various CNC turret punch press hydraulic parts and accessories, including components used for:

• Hydraulic energy storage
• Oil return buffering
• Hydraulic pressure control
• Pneumatic repositioning
• Hydraulic system maintenance
• Punch tooling and tooling replacement

This allows customers to source multiple replacement components for their CNC turret punch press from one supplier.